CVE-2020-27211
MEDIUM
5.7
CVSS Score
Published: May 21, 2021 at 12:04 PM UTC
Updated: June 17, 2026 at 03:08 AM UTC
2 products affected across 1 vendorNRF52840 FirmwareNrf52840
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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.3%
Description
Nordic Semiconductor nRF52840 devices through 2020-10-19 have improper protection against physical side channels. The flash read-out protection (APPROTECT) can be bypassed by injecting a fault during the boot phase.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Nrf52840· Nordicsemidevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (5)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://infocenter.nordicsemi.com/pdf/in_133_v1.0.pdfx_refsource_MISCThird Party Advisory
Source: [email protected]
https://limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass/x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.htmlx_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.aisec.fraunhofer.de/en/FirmwareProtection.htmlCVSS
- Attack Vector
- PHYSICAL
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-203
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